Thanks to 

Vamory
 for these links – for those of you who could not make it to DrupalCon Paris 2009 the videos are online here: http://www.archive.org/search.php?query=drupalcon%20paris

A selection of some highlights:

DrupalCon 2009 Paris: The state of Drupal performance and scalability

The state of Drupal performance and scalability http://www.archive.org/details/ThestateofDrupalperformanceandscalability

DrupalCon 2009 Paris: Agile Drupal Development with Scrum

Agile Drupal Development with Scrum http://www.archive.org/details/AgileDrupalDevelopmentwithScrum

DrupalCon 2009 Paris: Staging Drupal Managing your project in multiple environments

Staging Drupal Managing your project in multiple environments

http://www.archive.org/details/StagingDrupalManagingyourprojectinmultipleenvironments

DrupalCon 2009 Paris: Explore the glory of Drupal 7’s improved render and theming systems

Explore the glory of Drupal 7’s improved render and theming systems http://www.archive.org/details/ExplorethegloryofDrupal7simprovedrenderandthemingsystems 

Related Links: 

Drupal: http://www.drupal.org

DrupalCon Paris 2009: http://paris2009.drupalcon.org/

Internet Archive: http://www.archive.org/search.php?query=drupalcon%20paris